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由河北煤研所研制的FZ型切顶支架于1983年12月开始在开滦范各庄矿进行工业性试验。为了使这次试验取得较好的技术、经济效果,开滦矿务局决定采用目标管理法来指导这次试验。
The FZ-type top-cut stent developed by Hebei Coal Research Institute started its industrial experiment at the Fangezhuang mine in Kailuan since December 1983. In order to make this experiment to obtain better technical and economic results, Kailuan Mining Bureau decided to adopt the target management method to guide the trial.